High-resolution vector microwave magnetometry based on solid-state spins in diamond

Pengfei Wang, Zhenheng Yuan, Pu Huang, Xing Rong, Mengqi Wang, Xiangkun Xu, Changkui Duan, Chenyong Ju, Fazhan Shi and Jiangfeng Du ()
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Pengfei Wang: University of Science and Technology of China
Zhenheng Yuan: University of Science and Technology of China
Pu Huang: University of Science and Technology of China
Xing Rong: University of Science and Technology of China
Mengqi Wang: University of Science and Technology of China
Xiangkun Xu: University of Science and Technology of China
Changkui Duan: University of Science and Technology of China
Chenyong Ju: University of Science and Technology of China
Fazhan Shi: University of Science and Technology of China
Jiangfeng Du: University of Science and Technology of China

Nature Communications, 2015, vol. 6, issue 1, 1-5

Abstract: Abstract The measurement of the microwave field is crucial for many developments in microwave technology and related applications. However, measuring microwave fields with high sensitivity and spatial resolution under ambient conditions remains elusive. In this work, we propose and experimentally demonstrate a scheme to measure both the strength and orientation of the microwave magnetic field by utilizing the quantum coherent dynamics of nitrogen vacancy centres in diamond. An angular resolution of 5.7 mrad and a sensitivity of 1.0 μT Hz−1/2 are achieved at a microwave frequency of 2.6000 GHz, and the microwave magnetic field vectors generated by a copper wire are precisely reconstructed. The solid-state microwave magnetometry with high resolution and wide frequency range that can work under ambient conditions proposed here enables unique potential applications over other state-of-art microwave magnetometry.

Date: 2015
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DOI: 10.1038/ncomms7631

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